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In this chapter we will look at the entities in Java that are not objects – numbers and characters. This will give you all the elements of the language you need to perform numerical calculations, and we will apply these in a few working examples.
By the end of this chapter you will have learnt:
How to declare and define variables of the basic integer and floating point types
How to write an assignment statement
How integer and floating point expressions are evaluated
How to output data from a console program
How mixed integer and floating point expressions are evaluated
What casting is and when you must use it
What boolean variables are
What determines the sequence in which operators in an expression are executed
How to include comments in your programs
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